Effect of Ni-Content on Shape Memory Behavior of Ti-Rich Ti-Ni Melt-Spun Ribbons

Hongyang Xing; Anak Khantachawana; Hee Young Kim; Shuichi Miyazaki

doi:10.4028/www.scientific.net/MSF.475-479.1925

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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Effect of Ni-Content on Shape Memory Behavior of...

Effect of Ni-Content on Shape Memory Behavior of Ti-Rich Ti-Ni Melt-Spun Ribbons

Abstract:

The microstructure and shape memory behavior of Ti-rich Ti-Ni melt-spun ribbons with various Ni-contents were investigated. Ti-xNi(x=40~48at%) ribbons were fabricated by the melt-spinning method at the rotation speed of 5000rpm. They were heat-treated at 1073K for 3.6ks. It was found that the Ti-40at%Ni as-spun ribbon exhibited almost complete amorphous structure, while the specimen with more Ni-content, such as 48at%Ni ribbon exhibited the coexistence of amorphous and crystalline structures. It was also found that the maximum shape recovery strain increased with increasing Ni-content. The Ti-40at%Ni ribbon was very brittle because of many Ti2Ni precipitates formed.

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Materials Science Forum (Volumes 475-479)

Pages:

1925-1928

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https://doi.org/10.4028/www.scientific.net/MSF.475-479.1925

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Online since:

January 2005

Authors:

Hongyang Xing, Anak Khantachawana, Hee Young Kim, Shuichi Miyazaki

Keywords:

Melt-Spun Ribbon, Shape Memory Alloy Actuator, Shape Recovery Strain, Ti-Ni

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